In total, how many words are there using these specific combinations of letters?You could make 2 words using the specified combination.
How many characters does the longest word from this list consist of?The longest word you can construct from this list is 'icterohematuria', which is made up of 15 characters.
What's the highest number of points you're able to get in Scrabble from this list of words starting with 'i' that contain 'roh'?The only solution is 'iroha' which totals 8 points.